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Note G - Long-term Debt (Details) (Parentheticals)	12 Months Ended
	Jun. 30, 2016	Jun. 30, 2015
The10-year Unsecured Senior Notes [Member]
Maturity period of unsecured senior notes	10 years	10 years

X

- Definition

Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentTerm
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

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- Details

Name:	us-gaap_LongtermDebtTypeAxis=twin_The10YearUnsecuredSeniorNotesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: